Jennifer Donnelly is the author of historical fiction including Printz honoree A Northern Light, and fantasy novels that travel under the sea, into the Beast's magical library, and now into the small country village of Stepsister. Her latest follows Cinderella's so-called ugly stepsister, whose life becomes a battlefield between Fate and Chance: one of whom wants her to march quietly to her predetermined end, the other determined to help her defy it. We talked to Donnelly about fractured fairy tales, her life as a storyteller, and weird historical research.